Been trying to wrangle this form on Google My Business support for the past few days, and there is absolutely no way to submit it. The issue surprises me as it's a core part of support for google's small business offerings. Somebody's got some UX work to do!!
So, if you check the "more than 10 listings" checkbox, you still can't submit it?
Nope! Checked or unchecked, the form will not submit